Function rdxusb_new_device_iterator 

#[unsafe(no_mangle)]
pub extern "C" fn rdxusb_new_device_iterator(
    iter_id: *mut u64,
    n_devices: *mut u64,
) -> i32

Creates a new USB device iterator.

• iter_id - pointer where the iterator handle will be written
• n_devices - the number of USB devices available to the iterator

Return 0 on success, negative on error